Iridates from the molecular side.

Autor:	Pedersen KS; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, CRPP, UPR 8641, Pessac 33600, France.; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France., Bendix J; Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark., Tressaud A; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France., Durand E; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France., Weihe H; Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark., Salman Z; Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, Villigen PSI CH-5232, Switzerland., Morsing TJ; Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark., Woodruff DN; Department of Chemistry, University of Oxford, Oxford OX1 3QR, UK., Lan Y; CNRS, Inst NEEL, Grenoble F-38000, France., Wernsdorfer W; CNRS, Inst NEEL, Grenoble F-38000, France., Mathonière C; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, ICMCB, UPR 9048, Pessac 33600, France., Piligkos S; Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark., Klokishner SI; Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev 2028, Moldova., Ostrovsky S; Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev 2028, Moldova., Ollefs K; ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France., Wilhelm F; ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France., Rogalev A; ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France., Clérac R; CNRS, ICMCB, UPR 9048, Pessac 33600, France.; Univ. Bordeaux, CRPP, UPR 8641, Pessac 33600, France.
Jazyk:	angličtina
Zdroj:	Nature communications [Nat Commun] 2016 Jul 20; Vol. 7, pp. 12195. Date of Electronic Publication: 2016 Jul 20.
DOI:	10.1038/ncomms12195
Abstrakt:	New exotic phenomena have recently been discovered in oxides of paramagnetic Ir(4+) ions, widely known as 'iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO6](8-) species (the simplest molecular analogue of the elementary {IrO6}(8-) fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO6](8-) by isoelectronic fluorides to form the fluorido-iridate: [IrF6](2-). This molecular species has the same electronic ground state as the {IrO6}(8-) fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes.
Databáze:	MEDLINE
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